@XelaM, taking a break from school is not really the huge permanent decision people imagine it to be. Especially for a five year old! A child who is stressed and anxious could probably do with a relaxed environment to recover and restore his confidence, rather than potentially more of the same. Schools are different and another one might be better, but then again it might not.
School will always be available if the child decides he wants it. Many home ed kids do feel at some point that they want to try it out and experience what most other children do. It isn't difficult to arrange. Some like school and find it offers them opportunities they weren't getting at home, while others discover that it isn't right for them and return to home ed.
It was interesting for my eldest to find out what 98% of her peers were experiencing - she went to school for a while in Y5 - but she had never felt "abnormal" before or since.
School is "normal" in the sense that most people spend their formative years there. But it isn't "normal" compared with the rest of our society, the life the child has during the rest of their time and the life they will experience as adults. It is quite an artificial environment in that sense. Many of the lessons I learned at school had to be unlearned when I went out into the real world: work alone because consulting others is cheating, learn what others tell you to learn in exactly the way they tell you to do it, wait to be told where to go and when, tolerate even horrible situations because you cannot choose to go elsewhere, keep quiet when others are bullied or you'll become a victim too. Don't associate with people of a different age or gender, obey authority figures without question, sit still, verbal and sexual harassment is inescapable, pretend to like what everybody else likes.
I wouldn't even say I had a particularly hard time at school, but it's an odd institution which presents unique challenges, and develops different coping skills from those required elsewhere. In that sense it isn't a good preparation for life, except maybe life in the military or in prison.